Bikies caught getting off Spirit of Tas

Members of the Rebels outlaw motorcycle gang have been caught on unregistered motorcycles after a police operation in Tasmania.

Police targeted about 35 bikies getting off the Spirit of Tasmania on Monday after they returned from a national run, charging three for having unregistered bikes and one for being a suspended rider.

Acting Inspector Martin Parker appeared to suggest more charges could be laid, saying police were waiting for the results of some blood tests after oral fluid tests came back positive.